Sofa bed hinge



H. RAGINSKY s'oFA BED HINGE Jan. 20, 1953 2 SHEETS-SHEET l Filed Deo.1o', 194e Jn fren z/or Harzyajms@ 251% H. RAGINSKY 'SOFA BED HINGE 2SHEETS-SHEET 2 Filed Dec. 10, 1948 Patented Jan. 20,

SOFA BED HINGE Harry Ragnsky, Montreal, Quebec, Canada, assgnor toProgress Spring Bed Limited, Montreal, Quebec, Canada ApplicationDecember 10, 1948, Serial No. 64,513

also connected to end members of the sofa bed frame and support the seatand back sections for swinging movement from a sofa-forming position-toa bed-forming position and vice versa, the seat and back hinge membersof each hinge connection being provided with complementary lockingdevices which serve to lock the seat and back sections against relativemovement in their sofa-forming positions but permit the seat'section tobe moved relatively to the back section to a horizontal bed-formingposition after the seat and back sections have been moved as a unit toan intermediate hinge unlocking position in which the backA section isdisposed in a horizontal bed-forming position with -the seat section ina substantially vertical position.

The primary object of the present invention is to provide improved hingeconnections of the type referred to which are simpler in design andcheaper to manufacture and install than the hinge connections heretoforeemployed for supporting the seat and back sections for movement from asofa-forming position to a bed-forming position and vice versa.

Cther objects, advantages and characteristic features of the inventionwill be more readily understood from the following detailed descriptiontaken in connection with the accompanying drawings, in which- Fig. 1 isa side elevational view of one of my improved hinge connections as itappears looking toward the inner side. In this view the seat and backmembers fastened together by therhinge connection are shown in crosssectiontogether with one of the end members of the sofa bed frame towhich the hinge connection is. also fastened, the hinge connection andthe seatand back sections of the sofabedbeing shownin their sofa-formingposition. i

Fig. 2 is a view similar to Fig. lbut showing the seat and back sectionstransposed to a position in which the back `section is disposed in :ahorizontal bed-forming position while the seat section is disposed in avertical position.

Fig. 3 is a view similar to Fig. 2 but illustrating the manner in whichthe seat section is movable from the vertical position shown in Fig. 2to an inclined hinge unlocking positionto permittsubsequent independentmovement of the seat section to a bed-forming position in horizontalalignment with the back section.

Fig. 4 is a view showing the seat .and back sections in theirhorizontally aligned bed-forming position.

Fig. 5 is an inside elevation of the hinge connection per se as itappears in the absence oi the latch actuating plate and control barsshown in the preceding figures.

Fig. `6 is a plan View of the latch actuating plate shown in Figs. 1 to4 inclusive.

Fig. '1 is a sectional view taken substantially along the section line1-1 of Fig. 1.

In these drawings my improved hinge connectionis designated in itsentirety by reference numeral 4. It comprises a back hinge member 5having one end fastened to the back section 6 of the sofa bed and a seathinge member 1 havn ing one end fastened to the seat section 8 of thesofa bed. The remaining ends of the hinge members 5 and 1 are pivotallysecured together in overlapping relation by a pivot bolt 9 having a headI0 at one end and a clamping nut II at the opposite end. i I

The hinge members 5 and 1 are supported on an end member I2 of the sofabed by contr-ol bars I3 and I4 and control bar supporting plate I5. Theupper end of control bar I3 is fastened to the hinge 4 by the pivot bolt9 and is interposed between the head I0 of the bolt and a washer I6engaging the outer side of the pivotally connected end of hinge member 1as shown to advantage in Fig. '1. The lower portion of control bar I3 isintermediately pivoted at I1 to supporting plate I5 which is suitablyfastened to the end member I2. The upper end of control bar Iiil issecured by a pivot I8 to the back hinge member 5 and has its lowerportion intermediately pivoted at I9 to supportingv plate I5. `The lowerends of control bars I 3 and I4 which extend below the pivots I1 and I9are connected together by a coiled tension spring 2 I.

A hinge locking latch 23 is intermediately pivoted to the inner side oftheback hinge member 5; by a suitable pivot connection 24 which islocated below the pivot bolt 9 and at a point between the pivot bolt andthat end of the hinge member 5 which is connected to back section 6. Itwill also be noted that the latch pivot 2x1 is located relatively closeto the end of the latch nearest back section 6 and thatthis end o f thelatch is provided with a notch 25 receiving therein one end of a bowedspring 26. The other end of latch spring 26 Ais engaged in av hole 21provided in hinge member5'.. The'end or latch 2 3 remote from backsectionli` is providedwith a recess 29 in which a locking stud 30,carried by 2. A hinge as set forth in claim 1, including a stop pin Xedto the latch carrying hinge member and engageable with the latch tolimit swinging movement thereof in one direction.

3. A hinge as set forth in claim 1, in which the stud carrying member isprovided with a further stud engageable with the pivoted end of thelatch carrying hinge member to limit relative movement of the hingemembers in either direction about their pivotal connection.

4. A hinge as set forth in claim 1, including a plate covering saidlatch and rigidly secured to the stud carrying hinge member for movementtherewith, said plate being pivotally connected to the latch carryinghinge member by the pivotal connection between the two hinge members.

5. A hinge of the character described, comprising a pair of hingemembers, a pivot connecting said hinge members, a plate rotatablymounted on said pivot, a pair of studs carried by one of the hingemembers and tted in openings in said plate to hold said plate againstmovement about said pivot independently of the stud carrying hingemember, a latch member intermediately pivoted to the other hinge memberand positioned between the said other hinge member and said plate, oneend of said latch being formed with stud receiving recesses in which oneof said studs is engageable to lock the hinge members together forunitary movement, the other of said studs constituting a stop engageablewith the pivoted end of the latch carrying hinge member to limitrelative movement of said hinge member in either direction about saidpivot when the latch is shifted to a hinge releasing position, a springconnected to the latch and to the latch carrying hinge member and urgingthe latch to a hinge locking position, and a latch releasing studcarried by said plate and movable into latch releasing engagement with aportion of the latch located at the side of the latch pivot remote fromthe stud receiving recess of the latch.

6. A hinge. as set forth in claim 5, including a latch engaging stop pinfixed to the latch carrying hinge member and engageable with the latchto limit swinging movement thereof in one direction.

7. A hinge of the character described, comprising a supporting member, apair of hinge members, a pivot pivotally connecting said hinge members,a control bar pivoted to said supporting plate and having one endpivotally secured to the hinge members by the pivot connecting saidhinge members, a second control bar pivoted to said supporting plate andhaving one end pivoted to one of the hinge members at a point spacedfrom the pivot connecting said hinge members, a spring biased latchintermediately pivoted to one of the hinge members and provided with arecess at one end for engagement with a locking stud carried by theother hinge member, a latch releasing stud carried by the last mentionedhinge member and engageable with the latch at the side of the latchpivot remote from the latch recess to swing the latch to a hingereleasing position in response to a predetermined relative arrangementof said hinge members, and a spring acting against said control bars andnormally tending to swing them about their pivotal connections to thesupporting plate.

HARRY RAGINSKY.

REFERENCES CITED The following references are of record in the flle ofthis patent:

UNITED STATES PATENTS Number Name Date 773,720 Drury Nov. 1, 1904854,722 Deimel May 28, 1907 2,382,309 Burton Jan. 8, 1946 FOREIGNPATENTS Number Country Date 130,175 Austria Nov. 10, 1932

